/Engine/Source/Runtime/Core/Public/GenericPlatform/GenericPlatformMisc.h
Loads a text file relative to the package root on platforms that distribute apps in package formats. For other platforms, the path is relative to the root directory.
static [FString](API\Runtime\Core\Containers\FString) LoadTextFileFromPlatformPackage ( const [FString](API\Runtime\Core\Containers\FString) & RelativePath )